Farymann Diesel 15W Repair Manual page 60

8. Adjustment of fuel injection timing
The correct setting of the commencement of
delivery is a basic requirement for a troublefree
function of the engine. As the injection timing is
fixed, a check and re-adjustment is only neces-
sary when the engine speed is altered or the–
camshaft gear was renewed.
Note
Engines for generating sets are set at " begin of
delivery " point. Propulsion engines are set at
end of delivery " point !
First crank the engine to compression stroke till
TDC mark on the flywheel is approx. at 5 o'clock
position. Close fuel supply line.Remove the allen
head screw from injection pump head and the
cupper washer inside. Fit drip tube (=> tools).
Set the acceleration lever at max speed.
Attention
Excess starting fuel button must not be pulled !
Open fuel supply line. Slowly crank the engine
rotationwise and observe the drip tube. First the
fuel flows free => drips => stops => drips and
flows again.
Last drips before stop : begin of delivery point !
First drips after stop : end of delivery point !
The delivery cut-off point is correct when approx.
1 drop per second comes out of the tube.
Use a flexible ruler and measure the distance
between TDC marks on the flxwheel and crank-
case. Compare the measured data with the val-
ues recommended at the Technical Data Table.
Observe correct flywheel diameter and engine
speed !
If the measured value is out of tolerance, re-
adjust the commencement of delivery, either by
adding or removing adjustment shims.
Adding shims : delayed injection => shorter dis-
tance between TDC marks !
Removing shims : advanced injection => longer
distance between TDC marks !
TEST RUN, ADJUSTMENTS
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